主闭合回路 [电子] [自] main closed loop
主闭路极 domain closed-loop pole
主动脉瓣关闭不全 aortic insufficiency ; Aortic incompetence ; aortic regurgitation
主动闭锁 Active Locking
主动关闭 active close
慢性主动脉瓣关闭不全 Chronic aortic insufficiency
主动脉瓣闭锁 aortic atresia ; atresis of aortic valve
急性主动脉瓣关闭不全 acute aortic insufficiency
主动脉闭锁 aortic atresia ; Atresia of aorta
引擎主动开启关闭功能 Start-Stop function
将其测试结果与模拟试验结果进行了比较，为闭式循环4.4K制冷机的第一级主换热器的热端温差的合理选取提供了依据。
The basis for selecting the reasonable temperature difference at the hot end of the first main heat exchanger of close-cycle 4.4K refrigerator is provided.
给出满足主右理想极小条件诣零环的两个充要条件，此类环是扩张闭的。
This peper gives two necessary and sufficient conditions for a ring to be a nil MHR-ring. It is obtained that any nil MHR-ring is extension closed.
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